[vsnet-chat 3984] (fwd) V445 Pup (Eyres)

[Taichi Kato <tkato>]

(fwd) V445 Pup (Eyres)

From: "Stewart P. S. Eyres" <spse@astro.livjm.ac.uk>
Date: Wed, 17 Jan 2001 09:46:06 GMT
Subject: [vsnet-campaign-nova 0] V445 Pup

> Symbiotic stars usually have red giants, whose signature could have
> been easily detected by the 2MASS survey, but the possibility is
> rather unlikely becuase of the relatively blue color of the
> progenitor.

A number of symbiotic stars, particularly the so-called symbiotic
novae (e.g. HM Sge) have spectra early in their outbursts which show
no hint of a red giants, and often these objects were not even
identified as symbiotic stars until outburst.  Also, as far as I can
tell some symbiotic novae (e.g. HM Sge, V1016 Cyg) do not appear in
the  2MASS Second Incremental Release Point Source Catalog.  The
H-deficiency is harder to explain in the symbiotic model however.

Stewart Eyres <spse@astro.livjm.ac.uk>

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